What is the reason why the Civic cannot connect to Bluetooth?

[DeAdam]

Civic's inability to connect to Bluetooth may be due to incompatibility with mobile devices. Other possible reasons: It could also be that the phone's Bluetooth function does not support car Bluetooth or that the call audio is not selected, or there may still be compatibility issues with the Bluetooth device. Introduction to car Bluetooth: The Bluetooth technology in the car Bluetooth system is an extension of the Bluetooth technology in mobile phones, with the same transmission system. Car Bluetooth is simply an in-car wireless hands-free system designed and developed based on wireless Bluetooth technology. The function of car Bluetooth is to automatically identify mobile phones, allowing connection to the phone without the need for cables or phone holders. The owner can control the phone without touching it, even keeping both hands on the steering wheel, and can use voice commands to answer or make calls.

[OCharles]

I've repaired many Civic cars, and the most common issue with Bluetooth not connecting is either a software bug or a faulty Bluetooth module. If the infotainment system hasn't been updated for a long time, accumulated vulnerabilities can cause Bluetooth pairing to fail. It's also common for phones to become incompatible after an upgrade. First, try deleting all paired devices and restarting the head unit. Sometimes, low battery voltage can affect the signal, so checking the battery's health is important. Software issues can often be resolved with a simple reset, but a faulty module will need replacement. Unstable Bluetooth affects music playback and navigation, so don't waste time trying to fix it yourself—head straight to the 4S shop for professional diagnostics to prevent the problem from worsening. Regularly updating the system can help prevent these minor issues.

[LeMaverick]

I drive a Civic myself, and the Bluetooth issues are a real headache. It could be a problem with the phone's Bluetooth settings, like not being in discoverable mode or having an overly new version; a loose connection in the car's audio interface can also cause disconnections. Deleting old pairings and re-pairing usually fixes it, but the system tends to freeze if it hasn't been rebooted for a long time. The car's Bluetooth signal weakens when the battery is low—I once had to pull over and found the battery was drained. Switching between multiple devices is even more annoying, so I recommend sticking to one primary phone. Don't fiddle with it while driving—safety first. If a quick fix doesn’t work, just contact the service center; they deal with these issues often and can save you the hassle.

[MacSienna]

I enjoy tinkering with car electronics, and Civic Bluetooth connection issues are often due to compatibility problems. After a phone system upgrade, it may not match the car's Bluetooth version, causing pairing failure; restarting the head unit or deleting and re-pairing can help. Module damage is rare but can be checked with diagnostic tools; low battery power can make devices unstable, and sometimes replacing the battery miraculously fixes it. Keep the car's software updated to prevent bug accumulation. Bluetooth connection issues affect daily convenience—quickly seek a professional technician for inspection to ensure system health and avoid future troubles.